Description

The default setting for windows is to instantly appear and disappear with no animation. For regular users, this is often fairly jarring, and subtle animations are usually quite appreciated.

KWin offers an effect to do this: Glide. It's in System Settings > Desktop Behavior > Desktop Effects > Glide. It defaults to off; we should turn it on. Having this on is a really pleasant, humane effect that provides a sense of confidence.

I turn it on and the frist window I closed, 'vanished' into a icon in dolphin that was behind the window. That was quite irretating.
The current animation is IMHO also not very nice (personal impression)

I'm in favour of an open/close animation, but not as currently implemented. Instead fade in/out with translucy? But I'm sure
VDG or the Usability Experts have better suggestion.

As the initial author of the glide effect ( then code was cleaned and improved by the kwin team ), there was something I should have done at the time : Change the defaults !
I never really planned it to be like in the default manner.

It should be with values of: Glide Effect should be 2 out of 3 position, and Glide Angle should be a 0.

If you guys enable it by default can you please default it to those settings ?

I really like those effects, @zzag, especially appear and disappear 2. Might be worth trying to get those upstreamed, or at least offering them on the KDE store so people can get them via Get hot New Stuff.

The biggest problem is that those effects are written in C++ so they have to be compiled. To make easier to install them, I already packaged them for Fedora and Arch; Debian and Ubuntu(Kubuntu, Neon) is in the TODO list.